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Nalanda Open University
Annual Examination - 2015
B.Sc. Botany (Honours), Part-III
Paper-VI (Environmental Biology)
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. Questions No. 1 is compulsory. All questions carry equal marks.
1. Multiple choice questions :
(i) In which category the phytoplanktons will be placed?
(a) Consumer (b) Decomposer (c) Producer (d) All the above
(ii) Lithophytes are plants growing on :
(a) Rock (b) Saline soil (c) Sand (d) Acidic soil
(iii) Which of the following is a halophyte?
(a) Wolffia (b) Lichen (c) Opuntia (d) Rhizophora
(iv) Nitrifying bacteria produce :
(a) NH3 → NO3 (b) NO3 → N
(c) Protein → NH3 (d) None of these
(v) Cycling of mineral elements in an ecosystem is called :
(a) Biological cycle (b) Chemical cycle
(c) Biogeochemical cycle (d) Geological cycle
(vi) Acid rain is formed due to the union of water with :
(a) SO2 (b) Dust (c) N2 (d) None of these
(vii) Hazaribagh National Park is located in :
(a) Bihar State (b) Andhra (c) Karnatak (d) Jharkhand
(viii) Arsenic in underground water comes from :
(a) Pesticide (b) Radioactive
(c) Fume of automobile (d) Rock
2. Explain ecosystem and describe its various components.
3. What do you mean by succession? Describe the succession in a bare pond.
4. Describe the morphological and anatomical features of plants growing in submerged aquatic condition.
5. What is population? Describe the characteristics of population of an organism.
6. Give an account of water pollution and write the methods of its control.
7. What is conservation? Describe the methods of soil conservation.
8. What do you mean by social forestry? Describe the social forestry along with its advantage.
9. Describe different categories of natural resources.
10. Write notes on any Two of the following :
(a) Plant indicator (b) Desertification
(c) Non-conventional source of energy (d) Protected area
You may also download : NOU B.Sc Botany Paper-V Physiology and Biochemistry 2015 Question Paper
Nalanda Open University
Annual Examination - 2015
B.Sc. Botany (Honours), Part-III
Paper-VI (Environmental Biology)
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. Questions No. 1 is compulsory. All questions carry equal marks.
1. Multiple choice questions :
(i) In which category the phytoplanktons will be placed?
(a) Consumer (b) Decomposer (c) Producer (d) All the above
(ii) Lithophytes are plants growing on :
(a) Rock (b) Saline soil (c) Sand (d) Acidic soil
(iii) Which of the following is a halophyte?
(a) Wolffia (b) Lichen (c) Opuntia (d) Rhizophora
(iv) Nitrifying bacteria produce :
(a) NH3 → NO3 (b) NO3 → N
(c) Protein → NH3 (d) None of these
(v) Cycling of mineral elements in an ecosystem is called :
(a) Biological cycle (b) Chemical cycle
(c) Biogeochemical cycle (d) Geological cycle
(vi) Acid rain is formed due to the union of water with :
(a) SO2 (b) Dust (c) N2 (d) None of these
(vii) Hazaribagh National Park is located in :
(a) Bihar State (b) Andhra (c) Karnatak (d) Jharkhand
(viii) Arsenic in underground water comes from :
(a) Pesticide (b) Radioactive
(c) Fume of automobile (d) Rock
2. Explain ecosystem and describe its various components.
3. What do you mean by succession? Describe the succession in a bare pond.
4. Describe the morphological and anatomical features of plants growing in submerged aquatic condition.
5. What is population? Describe the characteristics of population of an organism.
6. Give an account of water pollution and write the methods of its control.
7. What is conservation? Describe the methods of soil conservation.
8. What do you mean by social forestry? Describe the social forestry along with its advantage.
9. Describe different categories of natural resources.
10. Write notes on any Two of the following :
(a) Plant indicator (b) Desertification
(c) Non-conventional source of energy (d) Protected area
You may also download : NOU B.Sc Botany Paper-V Physiology and Biochemistry 2015 Question Paper
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